How can I efile my Maryland return separately from the federal return? I efiled the federal return and it has been accepted. I could not file MD at the same time because I could not connect with Intuit to pay for the state return.

To e-file your state return:

1. In TurboTax Online, sign in to your account.
2. Select Tax Home in the left menu.
3. Scroll down to Your tax returns & documents.
4. Select 2020, and then select Add a State (you're not actually adding a state, this just gets you into the right area).
5. Select File in the left menu (expand your browser window if you don't see this, or select the menu icon in the top left corner).
6. On the Just one more step screen, follow steps 1 and 2 if you haven't already.
7. Select the Start button to the right of Step 3.
8. On the Let's get ready to e-file screen, select I want to e-file.
9. Follow the instructions to e-file your return.

Will this work if I was not using TurboTax online but a downloadable version of TurboTax?

If you e-filed your federal tax return using TurboTax Desktop, you will have to use that return in order to e-file your state tax return.  

With your return open, select the State Taxes tab near the top. This will take you to the state section and you can proceed from there.

Although you can e-file your federal and state taxes together, if you choose to e-file your federal first, you'll have to wait until that return has been accepted before you can e-file your state.

If your federal hasn't been accepted, or you printed and mailed it, you won't be able to e-file your state but you can print and mail a paper return.